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Finding the Fourth Proportional to 36,912.50, 50,939.30 and 20,145.50

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Solution

The fourth proportional to 36,912.50, 50,939.30 and 20,145.50 is: 27,800.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,912.50 : 50,939.30 = 20,145.50 : x
  2. Step 2: Convert to fraction form
    36,912.50/50,939.30 = 20,145.50/x
  3. Step 3: Cross multiply
    36,912.50x = 50,939.30 × 20,145.50
  4. Step 4: Simplify right side
    36,912.50x = 1,026,197,668.15
  5. Step 5: Solve for x
    x = 1,026,197,668.15/36,912.50
  6. Step 6: Final answer
    x = 27,800.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.